-------------------------------CONTRAINDICATIONS----------------------------- Do not use during episodes of hypoglycemia. (4)

1 HIGHLIGHTS OF PRESCRIBING INFORMATION These highlights do not include all the information needed to use HUMULIN R U-500 safely and effectively. See full prescribing information for HUMULIN R U-500. HUMULIN R U-500 (insulin human injection), for subcutaneous use Initial U.S. Approval: 1994 --------------------------- RECENT MAJOR CHANGES -------------------------Dosage and Administration: Delivery of HUMULIN R U-500 from HUMULIN R U-500 KwikPen (2.3) 12/2015 Warnings and Precautions: Never Share a HUMULIN R U-500 KwikPen or Syringes Between Patients (5.2) 12/2015 -------------------------------CONTRAINDICATIONS----------------------------- Do not use during episodes of hypoglycemia. (4) ------------------------ WARNINGS AND PRECAUTIONS ---------------------- Hyperglycemia, Hypoglycemia or Death due to Dosing Errors with Vial Presentation: Can be life-threatening. Overdose has occurred as a result of dispensing, prescribing or administration errors. Attention to details at all levels is required to prevent these errors. (2.1, 2.3, 2.4, 5.1) Never share a HUMULIN R U-500 KwikPen or syringe between patients, even if the needle is changed. (5.2) Hyper- or Hypoglycemia with Changes in Insulin Regimen: Carry out under close medical supervision and increase frequency of blood glucose monitoring. (5.3) Hypoglycemia: May be life-threatening. Increase monitoring with changes to: insulin dosage, co-administered glucose lowering medications, meal pattern, physical activity; and in patients with renal impairment or hepatic impairment or hypoglycemia unawareness. (5.4) Hypersensitivity Reactions: Severe, life-threatening, generalized allergy, including anaphylaxis, can occur. Discontinue HUMULIN R U-500, monitor, and treat if indicated. (5.5) Hypokalemia: May be life-threatening. Monitor potassium levels in patients at risk for hypokalemia and treat if indicated. (5.6) Fluid Retention and Heart Failure with Concomitant Use of Thiazolidinediones (TZDs): Observe for signs and symptoms of heart failure; consider dosage reduction or discontinuation if heart failure occurs. (5.7) ---------------------------- INDICATIONS AND USAGE --------------------------HUMULIN R U-500 is a concentrated human insulin indicated to improve glycemic control in adults and children with diabetes mellitus requiring more than 200 units of insulin per day. (1) Limitation of Use: The safety and efficacy of HUMULIN R U-500 used in combination with other insulins has not been determined. The safety and efficacy of HUMULIN R U-500 delivered by continuous subcutaneous infusion has not been determined. (1.1) ----------------------- DOSAGE AND ADMINISTRATION --------------------- Adhere to administration instructions to reduce the risk of dosing errors. (2.1, 2.3, 2.4, 5.1) Individualize dose of HUMULIN R U-500 based on metabolic needs, blood glucose monitoring results and glycemic control goal. (2.2) Administer HUMULIN R U-500 subcutaneously two or three times daily 30 minutes before a meal. Rotate injection sites to reduce the risk of lipodystrophy. (2.1, 2.2) Do NOT mix HUMULIN R U-500 with other insulins. (2.1) Do NOT administer HUMULIN R U-500 intravenously or intramuscularly. Do NOT perform dose conversion when using the HUMULIN R U-500 KwikPen. The dose window of the HUMULIN R U-500 KwikPen shows the number of units of HUMULIN R U-500 to be injected and NO dose conversion is required. Do NOT transfer HUMULIN R U-500 from the HUMULIN R U-500 KwikPen into a syringe. (2.3) CONVERT the prescribed dose of HUMULIN R U-500 into a unit or volume mark when using the vial presentation and a U-100 or a tuberculin syringe device to deliver HUMULIN R U-500. (2.4) ---------------------- DOSAGE FORMS AND STRENGTHS --------------------- Do not use in patients with hypersensitivity to HUMULIN R U-500 or any of its excipients. (4) ------------------------------- ADVERSE REACTIONS -----------------------------Adverse reactions associated with HUMULIN R U-500 include hypoglycemia, allergic reactions, injection site reactions, lipodystrophy, pruritus, and rash. (6) To report SUSPECTED ADVERSE REACTIONS, contact Eli Lilly and Company at 1-800-LillyRx (1-800-545-5979) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. ------------------------------- DRUG INTERACTIONS ----------------------------- Certain drugs may affect glucose metabolism and may necessitate insulin dose adjustment. (7.1, 7.2, 7.3) The signs of hypoglycemia may be reduced or absent in patients taking anti-adrenergic drugs (e.g., beta-blockers, clonidine, guanethidine, and reserpine). (7.3, 7.4) See 17 for PATIENT COUNSELING INFORMATION and FDAapproved patient labeling HUMULIN R U-500 (500 units per ml) is available in a colorless solution as: (3) 3 ml HUMULIN R U-500 KwikPen (prefilled, 1,500 units of insulin) Revised: 12/2015 20 ml vial (containing 10,000 units of insulin) FULL PRESCRIBING INFORMATION: CONTENTS* 1 INDICATIONS AND USAGE 1.1 Limitation of Use 2 DOSAGE AND ADMINISTRATION 2.1 Important Administration Instructions 2.2 Dosing Instructions 2.3 Delivery of HUMULIN R U-500 using the HUMULIN R U-500 Disposable Prefilled KwikPen Device 2.4 Delivery of HUMULIN R U-500 using a U-100 Insulin Syringe or a Tuberculin Syringe 3 DOSAGE FORMS AND STRENGTHS 4 CONTRAINDICATIONS 5 WARNINGS AND PRECAUTIONS 5.1 Hyperglycemia, Hypoglycemia or Death due to Dosing Errors with the Vial Presentation 5.2 Never Share a HUMULIN R U-500 KwikPen or Syringe Between Patients 5.3 5.4 5.5 5.6 5.7 Hyperglycemia or Hypoglycemia with Changes in Insulin Regimen Hypoglycemia Hypersensitivity and Allergic Reactions Hypokalemia Fluid Retention and Heart Failure with Concomitant Use of PPAR-gamma Agonists 6 ADVERSE REACTIONS 7 DRUG INTERACTIONS 7.1 Drugs That May Increase the Risk of Hypoglycemia 7.2 Drugs That May Decrease the Blood Glucose Lowering Effect of HUMULIN R U-500 7.3 Drugs That May Increase or Decrease the Blood Glucose Lowering Effect of HUMULIN R U-500 7.4 Drugs That May Affect Signs and Symptoms of Hypoglycemia

2 8 USE IN SPECIFIC POPULATIONS 8.1 Pregnancy 8.3 Nursing Mothers 8.4 Pediatric Use 8.5 Geriatric Use 8.6 Renal Impairment 8.7 Hepatic Impairment 10 OVERDOSAGE 11 DESCRIPTION 12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action 12.2 12.3 Pharmacodynamics Pharmacokinetics 13 NONCLINICAL TOXICOLOGY 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility 16 HOW SUPPLIED/STORAGE AND HANDLING 16.1 How Supplied 16.2 Storage and Handling 17 PATIENT COUNSELING INFORMATION *Sections or subsections omitted from the full prescribing information are not listed FULL PRESCRIBING INFORMATION 1 INDICATIONS AND USAGE HUMULIN R U-500 is a concentrated human insulin indicated to improve glycemic control in adult and pediatric patients with diabetes mellitus requiring more than 200 units of insulin per day. 1.1 Limitation of Use The safety and efficacy of HUMULIN R U-500 used in combination with other insulins has not been determined. The safety and efficacy of HUMULIN R U-500 delivered by continuous subcutaneous infusion has not been determined. 2 DOSAGE AND ADMINISTRATION 2.1 Important Administration Instructions 2.2 Dosing Instructions 2.3 Prescribe HUMULIN R U-500 ONLY to patients who require more than 200 units of insulin per day. Train patients on proper use and injection technique before initiating HUMULIN R U-500. Training reduces the risk of administration errors such as needle sticks and dosing errors. To avoid serious dosing errors for patients using the vial presentation, determine the type of syringe that the patient will use to deliver the prescribed dose of HUMULIN R U-500, instruct the patient on how to correctly draw the prescribed dose of HUMULIN R U-500 into the particular syringe, and confirm that the patient has understood these instructions and can correctly draw the prescribed dose of HUMULIN R U-500 with their syringe [see Dosage and Administration (2.4) and Warnings and Precautions (5.1)]. Instruct patients to always check the insulin label before administration to confirm the correct insulin product is being used [see Warnings and Precautions (5.1)]. Inspect HUMULIN R U-500 visually for particulate matter and discoloration. Only use HUMULIN R U-500 if the solution appears clear and colorless. Instruct patients to inject HUMULIN R U-500 subcutaneously into the thigh, upper arm, abdomen, or buttocks. Rotate injection sites within the same region from one injection to the next to reduce the risk of lipodystrophy [see Adverse Reactions (6)]. DO NOT administer HUMULIN R U-500 intravenously or intramuscularly. DO NOT dilute or mix HUMULIN R U-500 with any other insulin products or solutions. Instruct patients to inject HUMULIN R U-500 subcutaneously usually two or three times daily approximately 30 minutes before meals. Individualize and titrate the dosage of HUMULIN R U-500 based on the patient s metabolic needs, blood glucose monitoring results, and glycemic control goal. Dosage adjustments may be needed with changes in physical activity, changes in meal patterns (i.e., macronutrient content or timing of food intake), changes in renal or hepatic function, changes in medications or during acute illness to minimize the risk of hypoglycemia or hyperglycemia [see Warnings and Precautions (5.3)]. Delivery of HUMULIN R U-500 using the HUMULIN R U-500 Disposable Prefilled KwikPen Device DO NOT perform dose conversion when using the HUMULIN R U-500 KwikPen. The dose window of the HUMULIN R U-500 KwikPen shows the number of units of HUMULIN R U-500 to be injected and NO dose conversion is required.

2.4 DO NOT transfer HUMULIN R U-500 from the HUMULIN R U-500 KwikPen into a syringe for administration as overdose and severe hypoglycemia can occur [see Warnings and Precautions (5.4)]. The HUMULIN R U-500 KwikPen is for single patient use only [see Warnings and Precautions (5.2)]. Delivery of HUMULIN R U-500 using a U-100 Insulin Syringe or a Tuberculin Syringe U-100 insulin and tuberculin syringes are not scaled to measure HUMULIN R U-500 insulin. When using a U-100 insulin syringe or a tuberculin syringe to deliver HUMULIN U-500, a conversion step is REQUIRED to ensure the correct amount of HUMULIN R U-500 is drawn up in the syringe. Failure to follow this conversion step will result in failure to draw up the correct amount of HUMULIN R U-500 in the syringe and will result in serious dosing errors [see Warnings and Precautions (5.1)]. Markings on the U-100 syringe refer to units of less concentrated insulin products (i.e., U-100 insulin products) and NOT units of HUMULIN R U-500. If U-100 insulin syringes are used, prescribers or healthcare workers MUST CONVERT the prescribed dose of HUMULIN R U-500 into a U-100 insulin syringe unit marking to determine the correct amount of HUMULIN R U-500 to draw up in the syringe. Prescribers or healthcare workers MUST DETERMINE that patients can draw up the correct amount of HUMULIN R U-500 in the syringe before prescribing and dispensing. To convert from the HUMULIN R U-500 prescribed dose to a U-100 insulin syringe unit marking, divide the prescribed dose of HUMULIN R U-500 by 5. The resulting number is the unit marking on a U-100 insulin syringe to which the patient should draw up HUMULIN R U-500. For example, if a patient is prescribed 100 units of HUMULIN R U-500, then the patient should draw up HUMULIN R U-500 to the 20 unit mark on a U-100 insulin syringe (i.e., 100 divided by 5). Markings on the tuberculin syringe refer to volume (ml) and NOT units of HUMULIN R U-500. If tuberculin syringes are used, prescribers or healthcare workers MUST CONVERT the prescribed dose of HUMULIN R U-500 into a tuberculin syringe volume marking in ml to determine the correct amount of HUMULIN R U-500 to draw up in the syringe. Prescribers or healthcare workers MUST DETERMINE that patients can draw up the correct amount of HUMULIN R U-500 in the syringe before prescribing and dispensing. To convert from the HUMULIN R U-500 prescribed dose to a tuberculin syringe volume marking in ml, divide the prescribed dose of HUMULIN R U-500 by 500. The resulting number is the volume (ml) marking on a tuberculin syringe to which the patient should draw up HUMULIN R U-500. For example, if a patient is prescribed 100 units of HUMULIN R U-500, then the patient should draw up HUMULIN R U-500 to the 0.2 ml volume mark on a tuberculin syringe (i.e., 100 divided by 500). Table 1: Examples of prescribed doses of HUMULIN R U-500 converted to amount of HUMULIN R U-500 to draw up in a U100 insulin syringe or a tuberculin syringe for delivery of HUMULIN R U-500 using these devices HUMULIN R U-500 dose prescribed (units of insulin) 25 Units 50 Units 75 Units 100 Units 125 Units 150 Units 175 Units 200 Units 225 Units 250 Units 500 Units Delivery Using a U-100 insulin syringe Delivery Using a Tuberculin syringe Amount of HUMULIN R U-500 to draw up in the syringe in unit marking Amount of HUMULIN R U-500 to draw up in the syringe in volume marking Conversion: Divide prescribed dose by 5 Conversion: Divide prescribed dose by 500 Draw to the 5 unit mark on syringe Draw to the 10 unit mark on syringe Draw to the 15 unit mark on syringe Draw to the 20 unit mark on syringe Draw to the 25 unit mark on syringe Draw to the 30 unit mark on syringe Draw to the 35 unit mark on syringe Draw to the 40 unit mark on syringe Draw to the 45 unit mark on syringe Draw to the 50 unit mark on syringe Draw to the 100 unit mark on syringe Draw to the 0.05 ml mark on syringe Draw to the 0.1 ml mark on syringe Draw to the 0.15 ml mark on syringe Draw to the 0.2 ml mark on syringe Draw to the 0.25 ml mark on syringe Draw to the 0.3 ml mark on syringe Draw to the 0.35 ml mark on syringe Draw to the 0.4 ml mark on syringe Draw to the 0.45 ml mark on syringe Draw to the 0.5 ml mark on syringe Draw to the 1.0 ml mark on syringe

3 DOSAGE FORMS AND STRENGTHS HUMULIN R U-500 (500 units per ml) is available in a colorless solution as: 3 ml HUMULIN R U-500 KwikPen (prefilled, 1,500 units of insulin) 20 ml vial (containing 10,000 units of insulin) 4 CONTRAINDICATIONS HUMULIN R U-500 is contraindicated: During episodes of hypoglycemia In patients who are hypersensitive to HUMULIN R U-500 or any of its excipients. 5 WARNINGS AND PRECAUTIONS 5.1 Hyperglycemia, Hypoglycemia or Death due to Dosing Errors with the Vial Presentation Medication errors associated with the HUMULIN R U-500 vial presentation have occurred and resulted in patients experiencing hyperglycemia, hypoglycemia or death. The majority of errors occurred due to errors in dispensing, prescribing or administration. Attention to details at all levels may prevent these errors. Dispensing Errors Instruct patients to always inspect insulin vials to confirm that the correct insulin is dispensed including the correct insulin brand and concentration. The HUMULIN R U-500 vial, which contains 20 ml, has a band of diagonal brown stripes. U-500 is also highlighted in red on the HUMULIN R U-500 vial label. Prescribing Errors When using a U-100 insulin syringe or tuberculin syringe, express the prescribed dose of HUMULIN R U-500 in units of insulin along with the appropriate corresponding markings on the syringe the patient is using [see Dosage and Administration (2.4)]. Administration Errors Instruct patients to always check the insulin label before each injection. A majority of the medication errors with HUMULIN R U-500 vial presentation occurred due to dosing confusion when the HUMULIN R U-500 dose was prescribed in units or volume corresponding to a U-100 syringe or tuberculin syringe markings, respectively, or the prescribed dose was administered without recognizing that the markings on the syringe used do not directly correspond to U-500 dose. Adhere to administration and conversion instructions [see Dosage and Administration (2.1, 2.4)]. Instruct the patient to inform hospital or emergency department staff of the dose of HUMULIN R U-500 prescribed, in the event of a future hospitalization or visit to the Emergency Department. Conversion instructions are provided and should always be used when administering HUMULIN R U-500 doses with U-100 insulin syringes or 1 ml tuberculin syringes [see Dosage and Administration (2.4)]. 5.2 Never Share a HUMULIN R U-500 KwikPen or Syringe Between Patients HUMULIN R U-500 KwikPens should never be shared between patients, even if the needle is changed. Patients using HUMULIN R U-500 vials should never share needles or syringes with another person. Sharing poses a risk for transmission of bloodborne pathogens. 5.3 Hyperglycemia or Hypoglycemia with Changes in Insulin Regimen Changes in insulin, manufacturer, type, or method of administration may affect glycemic control and predispose to hypoglycemia or hyperglycemia. These changes should be made cautiously and only under medical supervision and the frequency of blood glucose monitoring should be increased. For patients with type 2 diabetes, adjustments in concomitant oral anti-diabetic treatment may be needed. 5.4 Hypoglycemia Hypoglycemia is the most common adverse reaction associated with insulin, including HUMULIN R U-500. Severe hypoglycemia can cause seizures, may be life-threatening or cause death. Severe hypoglycemia may develop as long as 18 to 24 hours after an injection of HUMULIN R U-500. Hypoglycemia can impair concentration ability and reaction time; this may place an individual and others at risk in situations where these abilities are important (e.g., driving, or operating other machinery). Hypoglycemia can happen suddenly and symptoms may differ in each individual and change over time in the same individual.

Symptomatic awareness of hypoglycemia may be less pronounced in patients with longstanding diabetes, in patients with diabetic nerve disease, in patients using medications that block the sympathetic nervous system (e.g., beta-blockers) [see Drug Interactions (7.3, 7.4)], or in patients who experience recurrent hypoglycemia. Risk Factors for Hypoglycemia The timing of hypoglycemia usually reflects the time-action profile of the administered insulin formulation. As with all insulin preparations, the glucose lowering effect time course of HUMULIN R U-500 may vary in different individuals or at different times in the same individual and depends on many conditions, including the area of injection as well as the injection site blood supply and temperature. Other factors which may increase the risk of hypoglycemia include changes in meal pattern (e.g., macronutrient content or timing of meals), changes in level of physical activity, or changes to co-administered medication [see Drug Interactions (7.1, 7.2, 7.3, 7.4)]. Patients with renal or hepatic impairment may be at higher risk of hypoglycemia [see Use in Specific Populations (8.6, 8.7)]. Risk Mitigation Strategies for Hypoglycemia Patients and caregivers must be educated to recognize and manage hypoglycemia. Self-monitoring of blood glucose plays an essential role in the prevention and management of hypoglycemia. In patients at higher risk for hypoglycemia and patients who have reduced symptomatic awareness of hypoglycemia, increased frequency of blood glucose monitoring is recommended. To minimize the risk of hypoglycemia do not administer HUMULIN R U-500 intravenously, intramuscularly or in an insulin pump or dilute or mix HUMULIN R U-500 with any other insulin products or solutions [see Dosage and Administration (2.1)]. 5.5 Hypersensitivity and Allergic Reactions Severe, life-threatening, generalized allergy, including anaphylaxis, can occur with insulin products, including HUMULIN R U-500 [see Adverse Reactions (6)]. If hypersensitivity reactions occur, discontinue HUMULIN R U-500; treat per standard of care and monitor until symptoms and signs resolve [See Adverse Reactions (6)]. 5.6 Hypokalemia All insulin products, including HUMULIN R U-500, cause a shift in potassium from the extracellular to intracellular space, possibly leading to hypokalemia. Untreated hypokalemia may cause respiratory paralysis, ventricular arrhythmia, and death. Use caution in patients who may be at risk for hypokalemia (e.g., patients using potassium-lowering medications, patients taking medications sensitive to serum potassium concentrations). 5.7 Fluid Retention and Heart Failure with Concomitant Use of PPAR-gamma Agonists Thiazolidinediones (TZDs), which are peroxisome proliferator-activated receptor (PPAR)-gamma agonists, can cause doserelated fluid retention, particularly when used in combination with insulin. Fluid retention may lead to or exacerbate heart failure. Patients treated with insulin, including HUMULIN R U-500, and a PPAR-gamma agonist should be observed for signs and symptoms of heart failure. If heart failure develops, it should be managed according to current standards of care, and discontinuation or dose reduction of the PPAR-gamma agonist must be considered. 6 ADVERSE REACTIONS The following adverse reactions are discussed elsewhere: Hypoglycemia [see Warnings and Precautions (5.4)]. Hypokalemia [see Warnings and Precautions (5.6)]. The following additional adverse reactions have been identified during post-approval use of HUMULIN R U-500. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or to establish a causal relationship to drug exposure. Hypoglycemia Hypoglycemia is the most commonly observed adverse reaction in patients using insulin, including HUMULIN R U-500 [see Warnings and Precautions (5.4)]. Allergic Reactions Severe, life-threatening, generalized allergy, including anaphylaxis, generalized skin reactions, rash, angioedema, bronchospasm, hypotension, and shock may occur with any insulin, including HUMULIN R U-500 and may be life threatening [see Warnings and Precautions (5.5)]. Lipodystrophy Long-term use of insulin, including HUMULIN R U-500, can cause lipodystrophy at the site of repeated insulin injections. Lipodystrophy includes lipohypertrophy (thickening of adipose tissue) and lipoatrophy (thinning of adipose tissue) and may affect

insulin absorption. Rotate insulin injections sites within the same region to reduce the risk of lipodystrophy [see Dosage and Administration (2.1)]. Injection Site Reactions Patients taking HUMULIN R U-500 may experience injection site reactions, including injection site hematoma, pain, hemorrhage, erythema, nodules, swelling, discoloration, pruritus, warmth, and injection site mass. Weight Gain Weight gain can occur with insulin therapy, including HUMULIN R U-500, and has been attributed to the anabolic effects of insulin. Peripheral Edema Insulin, including HUMULIN R U-500, may cause sodium retention and edema, particularly if previously poor metabolic control is improved by intensified insulin therapy. Immunogenicity As with all therapeutic proteins, insulin administration may cause anti-insulin antibodies to form. The presence of antibodies that affect clinical efficacy may necessitate dose adjustments to correct for tendencies toward hyper- or hypoglycemia. The incidence of antibody formation with HUMULIN R U-500 is unknown. 7 DRUG INTERACTIONS 7.1 Drugs That May Increase the Risk of Hypoglycemia The risk of hypoglycemia associated with HUMULIN R U-500 use may be increased with antidiabetic agents, ACE inhibitors, angiotensin II receptor blocking agents, disopyramide, fibrates, fluoxetine, monoamine oxidase inhibitors, pentoxifylline, pramlintide, propoxyphene, salicylates, somatostatin analogs (e.g., octreotide), and sulfonamide antibiotics. Dose adjustment and increased frequency of glucose monitoring may be required when HUMULIN R U-500 is co-administered with these drugs. 7.2 Drugs That May Decrease the Blood Glucose Lowering Effect of HUMULIN R U-500 The glucose lowering effect of HUMULIN R U-500 may be decreased when co-administered with atypical antipsychotics (e.g., olanzapine and clozapine), corticosteroids, danazol, diuretics, estrogens, glucagon, isoniazid, niacin, oral contraceptives, phenothiazines, progestogens (e.g., in oral contraceptives), protease inhibitors, somatropin, sympathomimetic agents (e.g., albuterol, epinephrine, terbutaline) and thyroid hormones. Dose adjustment and increased frequency of glucose monitoring may be required when HUMULIN R U-500 is co-administered with these drugs. 7.3 Drugs That May Increase or Decrease the Blood Glucose Lowering Effect of HUMULIN R U-500 The glucose lowering effect of HUMULIN R U-500 may be increased or decreased when co-administered with alcohol, betablockers, clonidine, and lithium salts. Pentamidine may cause hypoglycemia, which may sometimes be followed by hyperglycemia. Dose adjustment and increased frequency of glucose monitoring may be required when HUMULIN R U-500 is co-administered with these drugs. 7.4 Drugs That May Affect Signs and Symptoms of Hypoglycemia The signs and symptoms of hypoglycemia [see Warnings and Precautions (5.4)] may be blunted when beta-blockers, clonidine, guanethidine, and reserpine are co-administered with HUMULIN R U-500. 8 USE IN SPECIFIC POPULATIONS 8.1 Pregnancy Pregnancy Category B Risk Summary All pregnancies have a background risk of birth defects, loss, or other adverse outcome regardless of drug exposure. This background risk is increased in pregnancies complicated by hyperglycemia and may be decreased with good metabolic control. It is essential for patients with diabetes or history of gestational diabetes to maintain good metabolic control before conception and throughout pregnancy. In patients with diabetes or gestational diabetes, insulin requirements may decrease during the first trimester, generally increase during the second and third trimesters, and rapidly decline after delivery. Careful monitoring of glucose control is

essential in these patients. Therefore, female patients should be advised to tell their physicians if they intend to become, or if they become pregnant while taking HUMULIN R U-500. Human Data While there are no adequate and well-controlled studies in pregnant women, evidence from published literature suggests that good glycemic control in patients with diabetes during pregnancy provides significant maternal and fetal benefits. Animal Data Reproduction and fertility studies were not performed in animals. 8.3 Nursing Mothers Endogenous insulin is present in human milk. Insulin orally ingested is degraded in the gastrointestinal tract. No adverse reactions associated with infant exposure to insulin through the consumption of human milk have been reported. In a study of eight preterm infants between 26 to 30 weeks gestation, enteral administration of biosynthetic human insulin did not result in hypoglycemia. Good glucose control supports lactation in patients with diabetes. Women with diabetes who are lactating may require adjustments in their insulin dose. 8.4 Pediatric Use There are no well-controlled studies of use of HUMULIN R U-500 in children. Standard precautions as applied to use of HUMULIN R U-500 in adults are appropriate for use in children. As in adults, the dosage of HUMULIN R U-500 in pediatric patients must be individualized based on metabolic needs and results of frequent monitoring of blood glucose. 8.5 Geriatric Use The effect of age on the pharmacokinetics and pharmacodynamics of HUMULIN R U-500 has not been studied. Caution should be exercised when HUMULIN R U-500 is administered to geriatric patients. In elderly patients with diabetes, the initial dosing, dose increments, and maintenance dosage should be conservative to avoid hypoglycemia. 8.6 Renal Impairment Frequent glucose monitoring and insulin dose reduction may be required in patients with renal impairment. 8.7 Hepatic Impairment Frequent glucose monitoring and insulin dose reduction may be required in patients with hepatic impairment. 10 OVERDOSAGE Excess insulin administration may cause hypoglycemia and hypokalemia. Mild episodes of hypoglycemia usually can be treated with oral glucose. Adjustments in drug dosage, meal patterns, or exercise may be needed. More severe episodes with coma, seizure, or neurologic impairment may be treated with intramuscular/subcutaneous glucagon or concentrated intravenous glucose. Sustained carbohydrate intake and observation may be necessary because hypoglycemia may recur after apparent clinical recovery. Hypokalemia must be corrected appropriately. 11 DESCRIPTION HUMULIN R U-500 (insulin human injection, USP) is a human insulin solution used to lower blood glucose. Human insulin is produced by recombinant DNA technology utilizing a non-pathogenic laboratory strain of Escherichia coli. HUMULIN R has the empirical formula C257H383N65O77S6 with a molecular weight of 5808. HUMULIN R U-500 is a sterile, aqueous, and colorless solution. HUMULIN R U-500 contains 500 units of insulin in each milliliter. Each milliliter of HUMULIN R U-500 also contains glycerin 16 mg, metacresol 2.5 mg, zinc oxide to supplement the endogenous zinc to obtain a total zinc content of 0.017 mg/100 units, and Water for Injection. Sodium hydroxide and hydrochloric acid may be added during manufacture to adjust the ph. 12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Regulation of glucose metabolism is the primary activity of insulins, including HUMULIN R U-500. Insulins lower blood glucose by stimulating peripheral glucose uptake by skeletal muscle and fat, and by inhibiting hepatic glucose production. Insulins inhibit lipolysis and proteolysis, and enhance protein synthesis.

12.2 Pharmacodynamics In a euglycemic clamp study of 24 healthy obese subjects (BMI=30-39 kg/m2), single doses of HUMULIN R U-500 at 50 units (0.4-0.6 unit/kg) and 100 units (0.8-1.3 unit/kg) resulted in a mean time of onset of action of less than 15 minutes at both doses and a mean duration of action of 21 hours (range 13-24 hours). The time action characteristics reflect both prandial and basal activity, consistent with clinical experience. This effect has been attributed to the high concentration of the preparation. Figure 1 should be considered a representative example since the time course of action of insulin may vary in different individuals or within the same individual. The rate of insulin absorption and consequently the onset of activity is known to be affected by the site of injection, exercise, and other variables [see Warnings and Precautions (5.3)]. Figure 1: Mean Insulin Activity Versus Time Profiles After Subcutaneous Injection of a 100 U Dose of HUMULIN R U-500 in Healthy Obese Subjects 12.3 Pharmacokinetics Absorption In a euglycemic clamp study of 24 healthy obese subjects, the median peak insulin level occurred between 4 hours (50 unit dose) and 8 hours (100 unit dose) with a range of 0.5-8 hours. Metabolism The uptake and degradation of insulin occurs predominantly in liver, kidney, muscle, and adipocytes, with the liver being the major organ involved in the clearance of insulin. Elimination Mean apparent half-life after subcutaneous administration of single doses of 50 units and 100 units to healthy obese subjects (N 21) was approximately 4.5 hours (range=1.9-10 hours) for HUMULIN R U-500.

Figure 2: Mean Serum Insulin Concentrations Versus Time After Subcutaneous Injection of a 100 U Dose of HUMULIN R U-500 Healthy Obese Subjects 13 NONCLINICAL TOXICOLOGY 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenicity and fertility studies were not performed with HUMULIN R U-500 in animals. Biosynthetic human insulin was not genotoxic in the in vivo sister chromatid exchange assay and the in vitro gradient plate and unscheduled DNA synthesis assays. 16 HOW SUPPLIED/STORAGE AND HANDLING 16.1 How Supplied HUMULIN R U-500 (500 units per ml) is available as: 2 x 3 ml HUMULIN R U-500 KwikPen (prefilled) 20 ml vials 16.2 NDC 0002-8824-27 NDC 0002-8501-01 Storage and Handling Protect from heat and light. Do not freeze. Do not use HUMULIN R U-500 after the expiration date printed on the label or if it has been frozen. Do not shake the vial. Not In Use (Unopened) HUMULIN R U-500 KwikPen Refrigerated Store in a refrigerator (36 to 46 F [2 to 8 C]), but not in the freezer. Do not use if it has been frozen. Room Temperature If stored at room temperature, below 86 F (30 C) the pen must be discarded after 28 days. In-Use (Opened) HUMULIN R U-500 KwikPen Refrigerated Do NOT store in a refrigerator. Room Temperature Store at room temperature, below 86 F (30 C) and the pen must be discarded after 28 days, even if the pen still contains HUMULIN R U-500. See storage table below: Not In Use (Unopened) HUMULIN R U-500 Vials

Refrigerated Store in a refrigerator (36 to 46 F [2 to 8 C]), but not in the freezer. Do not use if it has been frozen. Room Temperature If stored at room temperature, below 86 F (30 C) the vial must be discarded after 40 days. In-Use (Opened) HUMULIN R U-500 Vials Refrigerated Store in a refrigerator (36 to 46 F [2 to 8 C]), but not in the freezer. Do not use if it has been frozen. Vials must be used within 40 days or be discarded, even if they still contain HUMULIN R U-500. Room Temperature If stored at room temperature, below 86 F (30 C) the vial must be discarded after 40 days, even if the vial still contains HUMULIN R U-500. See storage table below: Not In-Use (Unopened) Refrigerated In-Use (Opened) 3 ml HUMULIN R U-500 KwikPen (prefilled) Until expiration date 20 ml vial Until expiration date 28 days, room temperature. Do not refrigerate. 40 days, refrigerated or room temperature 17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling. Patients should be counseled that HUMULIN R U-500 is a 5-times concentrated insulin product. Extreme caution must be observed in the measurement of dosage because inadvertent overdose may result in serious adverse reaction or life-threatening hypoglycemia. Accidental mix-ups between HUMULIN R U-500 and other insulins have been reported. To avoid medication errors between HUMULIN R U-500 and other insulins, patients should be instructed to always check the insulin label before each injection [see Warnings and Precautions (5.1)]. If using the HUMULIN R U-500 KwikPen, patients should be counseled to dial and dose the prescribed number of units of insulin (no dose conversion is required) [see Dosage and Administration (2.3)]. When using HUMULIN R U-500 from a vial, patients should be counseled to calculate the conversion and measure the amount of delivered insulin using the unit of measurement that corresponds to the type of syringe being used [see Dosage and Administration (2.4)]. Patients should be instructed on self-management procedures including glucose monitoring, proper injection technique, and management of hypoglycemia and hyperglycemia, especially at initiation of HUMULIN R U-500 therapy. Patients must be instructed on handling of special situations such as intercurrent conditions (illness, stress, or emotional disturbances), an inadequate or skipped insulin dose, inadvertent administration of an increased insulin dose, inadequate food intake, and skipped meals. Refer patients to the HUMULIN R U-500 Patient Information Leaflet for additional information [see Warnings and Precautions (5)]. Women with diabetes should be advised to inform their doctor if they are pregnant or are contemplating pregnancy. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. Never use HUMULIN R U-500 if it has become viscous (thickened) or cloudy; use it only if it is clear and colorless. HUMULIN R U-500 should not be used after the printed expiration date. Do not dilute or mix HUMULIN R U-500 with any other insulin products or solutions [see Dosage and Administration (2.1)]. Literature Revised: December 2015 Marketed by: Lilly USA, LLC, Indianapolis, IN 46285, USA Copyright 1997, 2015, Eli Lilly and Company. All rights reserved. LINR500-0001-USPI-20151229